Retrofit louver for evaporative air coolers



FIG. 1 is a front perspective view showing my new retrofit louver design;

FIG. 2 is a top plan view thereof, the bottom being a mirror image of that shown;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side being a mirror image of that shown;

FIG. 5 is a cross-sectional view thereof, taken along line 5--5 in FIG. 3; and,

FIG. 6 is a cross-sectional view thereof, along line 6--6 in FIG. 3. 

The ornamental design for a retrofit louver for evaporative air coolers, as shown and described. 